a.
To calculate: The equation of the tangent.
a.

Answer to Problem 19E
The equation of the tangent is
Explanation of Solution
Given information:
The function is
Concept used:
The equation of tangent of a line is
Calculation:
Slope of tangent line is as shown below.
The slope of tangent line is
The value of
The value of
Substitute the values in the standard equation of line
Conclusion: The equation of tangent line is
b.
To calculate: The equation of normal line.
b.

Answer to Problem 19E
The equation of normal line is
Explanation of Solution
Given information:
The function is
Concept used:
The formula used to find slope of normal line is
Calculation:
Use the formula
The slope of normal line is
The value of
Substitute the values in the standard equation of line
Conclusion: The equation of normal line is
Chapter 2 Solutions
CALCULUS-W/XL ACCESS
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